I'm in Beijing now, and just got back from setting my PIN at ISBC, and then went next door to the ICBC to gather information. These two are at the World Trade Center. The ISBC is one of two in Beijing that are called the premier banks they can set up all accounts including business. Have to go to one of these two. This is what I found out:
ISBC - You cannot open more then one personal account there. Need a passport and a residency address, but if you know someone, as I do then you can use their address to have your mail sent. Your ATM card can be used anywhere in China, and it can be used in the U.S. only at Union Pay machines. Maximum withdrawal per day is 20,000 RMB. That's nice. Presently they don't offer ATM credit cards. You can wire money in and out no problem.
ICBC - Personal account again you need a passport, and I can't recall if you need a residency permit, as my sole purpose was to find out what their requirements are for an ATM credit card. I was surprised to find out that all I need to produce is proof of income from the U.S., passport, and residency permit. This dispelled the myth that you needed to show an income in China to get this. This card can be used in all visa/mc machines in the U.S., and at all ATM credit card machines in China.
Hope this helps